Could we please remember some importants facts.

First, this game is or, at least, SHOULD BE inspired by BG which is inspired by D&D.
Which means this game ISN'T a copy/past of D&D (like, you know, barrelmancy).
BG1 and 2 didn't have roll-check in dialogues so people should really stop coming to talk about the "this is D&D" cause this is not. This is (well, this SHOULD BE) BG.

Second, I kind of like the games where your skills unlock some dialogue, it seems to be a simple and fair way to do.
The more you buff your social skill, the more option you get (in a way, it's far better than proposing the same dialogues for an an intellectual sorcerer and a dumbass barbarian tbh).

Thirdly, the roll-check have been designed for pen and paper game. It was necessary because the GM couldn't know what his gamers was going to say and so it would have been hard to determine if they was convincing or not. So, in order to not fight, there is the dice.
But this is NOT a pen and paper game, we are NOT choosing what we are goign to say. We are choosing beetwen option determined by the writters. yet when the writters create a dialogue they exactly know where it should go. They don't choose random sentence, they think and choose a sentence who could be, for example, intimidating.
Actually, with the roll-dice, it's like the world was FULL OF LUNATICS with imprevisible reaction. This is not reaslitic (I said realistic, not realist) and it just depreciate the work of the writters.
Wouldn't you find it stupid if reading a book, there was write
" - Ho Dylan, I love you !
- Please, take a dice and roll it in order to know if Dylan will love Kelly back, slap her or just eat his own finger - "
You would think it's dumb. You would wonder what the author was thinking.

So, I completely undertand the roll-dice in pen and paper game cause it prevents any fights against the GM and the gamers but in a full written story, it doesn't make sens.
It's just a poor attempt to give a feel which have no place in a video game. It's a mistake, something I never experienced in all the other RPGs I played (and I played quite a lot), and an evidence of the Larian's wanderings.



PS: and for all the people who would STILL argue about "but this is D&D", I would like to add a last thing. If you are so fond of D&D, you should ask for Larian to remove all the graphics and make the game exclusively vocals since it would be more "D&D"...